Document system in README

Describe the system in README file and document:

• backend apis
• frontend pages
• system design and how to run
• additional info (e.g. permissions etc.)

changed milestone to %Iteration 4

added documentation enhancement medium support labels

assigned to @elisabeh

By elisabet hein on 2024-11-17T16:14:42

mentioned in commit 21f7b6d8

By elisabet hein on 2024-11-20T12:45:38

closed

mentioned in commit e670012c

By elisabet hein on 2024-12-10T14:43:44

added 3h of time spent

By elisabet hein on 2024-12-13T09:46:54